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Diffstat (limited to 'json/src/main/java/org/json/JSONObject.java')
| -rw-r--r-- | json/src/main/java/org/json/JSONObject.java | 1081 |
1 files changed, 0 insertions, 1081 deletions
diff --git a/json/src/main/java/org/json/JSONObject.java b/json/src/main/java/org/json/JSONObject.java deleted file mode 100644 index b0ebea2..0000000 --- a/json/src/main/java/org/json/JSONObject.java +++ /dev/null @@ -1,1081 +0,0 @@ -package org.json; - -/* -Copyright (c) 2002 JSON.org - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. - -The Software shall be used for Good, not Evil. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -SOFTWARE. -*/ - -import java.util.HashMap; -import java.util.Iterator; -import java.util.Map; - -// BEGIN android-note -// - fixed bad htm in javadoc comments -joeo -// END android-note - -/** - * A JSONObject is an unordered collection of name/value pairs. Its - * external form is a string wrapped in curly braces with colons between the - * names and values, and commas between the values and names. The internal form - * is an object having <code>get</code> and <code>opt</code> methods for - * accessing the values by name, and <code>put</code> methods for adding or - * replacing values by name. The values can be any of these types: - * <code>Boolean</code>, <code>JSONArray</code>, <code>JSONObject</code>, - * <code>Number</code>, <code>String</code>, or the <code>JSONObject.NULL</code> - * object. A JSONObject constructor can be used to convert an external form - * JSON text into an internal form whose values can be retrieved with the - * <code>get</code> and <code>opt</code> methods, or to convert values into a - * JSON text using the <code>put</code> and <code>toString</code> methods. - * A <code>get</code> method returns a value if one can be found, and throws an - * exception if one cannot be found. An <code>opt</code> method returns a - * default value instead of throwing an exception, and so is useful for - * obtaining optional values. - * <p> - * The generic <code>get()</code> and <code>opt()</code> methods return an - * object, which you can cast or query for type. There are also typed - * <code>get</code> and <code>opt</code> methods that do type checking and type - * coersion for you. - * <p> - * The <code>put</code> methods adds values to an object. For example, <pre> - * myString = new JSONObject().put("JSON", "Hello, World!").toString();</pre> - * produces the string <code>{"JSON": "Hello, World"}</code>. - * <p> - * The texts produced by the <code>toString</code> methods strictly conform to - * the JSON sysntax rules. - * The constructors are more forgiving in the texts they will accept: - * <ul> - * <li>An extra <code>,</code> <small>(comma)</small> may appear just - * before the closing brace.</li> - * <li>Strings may be quoted with <code>'</code> <small>(single - * quote)</small>.</li> - * <li>Strings do not need to be quoted at all if they do not begin with a quote - * or single quote, and if they do not contain leading or trailing spaces, - * and if they do not contain any of these characters: - * <code>{ } [ ] / \ : , = ; #</code> and if they do not look like numbers - * and if they are not the reserved words <code>true</code>, - * <code>false</code>, or <code>null</code>.</li> - * <li>Keys can be followed by <code>=</code> or <code>=></code> as well as - * by <code>:</code>.</li> - * <li>Values can be followed by <code>;</code> <small>(semicolon)</small> as - * well as by <code>,</code> <small>(comma)</small>.</li> - * <li>Numbers may have the <code>0-</code> <small>(octal)</small> or - * <code>0x-</code> <small>(hex)</small> prefix.</li> - * <li>Comments written in the slashshlash, slashstar, and hash conventions - * will be ignored.</li> - * </ul> - * @author JSON.org - * @version 2 - */ -public class JSONObject { - - /** - * JSONObject.NULL is equivalent to the value that JavaScript calls null, - * whilst Java's null is equivalent to the value that JavaScript calls - * undefined. - */ - private static final class Null { - - /** - * There is only intended to be a single instance of the NULL object, - * so the clone method returns itself. - * @return NULL. - */ - protected final Object clone() { - return this; - } - - - /** - * A Null object is equal to the null value and to itself. - * @param object An object to test for nullness. - * @return true if the object parameter is the JSONObject.NULL object - * or null. - */ - public boolean equals(Object object) { - return object == null || object == this; - } - - - /** - * Get the "null" string value. - * @return The string "null". - */ - public String toString() { - return "null"; - } - } - - - /** - * The hash map where the JSONObject's properties are kept. - */ - private HashMap myHashMap; - - - /** - * It is sometimes more convenient and less ambiguous to have a - * <code>NULL</code> object than to use Java's <code>null</code> value. - * <code>JSONObject.NULL.equals(null)</code> returns <code>true</code>. - * <code>JSONObject.NULL.toString()</code> returns <code>"null"</code>. - */ - public static final Object NULL = new Null(); - - - /** - * Construct an empty JSONObject. - */ - public JSONObject() { - this.myHashMap = new HashMap(); - } - - - /** - * Construct a JSONObject from a subset of another JSONObject. - * An array of strings is used to identify the keys that should be copied. - * Missing keys are ignored. - * @param jo A JSONObject. - * @param sa An array of strings. - * @exception JSONException If a value is a non-finite number. - */ - public JSONObject(JSONObject jo, String[] sa) throws JSONException { - this(); - for (int i = 0; i < sa.length; i += 1) { - putOpt(sa[i], jo.opt(sa[i])); - } - } - - - /** - * Construct a JSONObject from a JSONTokener. - * @param x A JSONTokener object containing the source string. - * @throws JSONException If there is a syntax error in the source string. - */ - public JSONObject(JSONTokener x) throws JSONException { - this(); - char c; - String key; - - if (x.nextClean() != '{') { - throw x.syntaxError("A JSONObject text must begin with '{'"); - } - for (;;) { - c = x.nextClean(); - switch (c) { - case 0: - throw x.syntaxError("A JSONObject text must end with '}'"); - case '}': - return; - default: - x.back(); - key = x.nextValue().toString(); - } - - /* - * The key is followed by ':'. We will also tolerate '=' or '=>'. - */ - - c = x.nextClean(); - if (c == '=') { - if (x.next() != '>') { - x.back(); - } - } else if (c != ':') { - throw x.syntaxError("Expected a ':' after a key"); - } - this.myHashMap.put(key, x.nextValue()); - - /* - * Pairs are separated by ','. We will also tolerate ';'. - */ - - switch (x.nextClean()) { - case ';': - case ',': - if (x.nextClean() == '}') { - return; - } - x.back(); - break; - case '}': - return; - default: - throw x.syntaxError("Expected a ',' or '}'"); - } - } - } - - - /** - * Construct a JSONObject from a Map. - * @param map A map object that can be used to initialize the contents of - * the JSONObject. - */ - public JSONObject(Map map) { - this.myHashMap = new HashMap(map); - } - - - /** - * Construct a JSONObject from a string. - * This is the most commonly used JSONObject constructor. - * @param string A string beginning - * with <code>{</code> <small>(left brace)</small> and ending - * with <code>}</code> <small>(right brace)</small>. - * @exception JSONException If there is a syntax error in the source string. - */ - public JSONObject(String string) throws JSONException { - this(new JSONTokener(string)); - } - - - /** - * Accumulate values under a key. It is similar to the put method except - * that if there is already an object stored under the key then a - * JSONArray is stored under the key to hold all of the accumulated values. - * If there is already a JSONArray, then the new value is appended to it. - * In contrast, the put method replaces the previous value. - * @param key A key string. - * @param value An object to be accumulated under the key. - * @return this. - * @throws JSONException If the value is an invalid number - * or if the key is null. - */ - public JSONObject accumulate(String key, Object value) - throws JSONException { - testValidity(value); - Object o = opt(key); - if (o == null) { - put(key, value); - } else if (o instanceof JSONArray) { - ((JSONArray)o).put(value); - } else { - put(key, new JSONArray().put(o).put(value)); - } - return this; - } - - - /** - * Get the value object associated with a key. - * - * @param key A key string. - * @return The object associated with the key. - * @throws JSONException if the key is not found. - */ - public Object get(String key) throws JSONException { - Object o = opt(key); - if (o == null) { - throw new JSONException("JSONObject[" + quote(key) + - "] not found."); - } - return o; - } - - - /** - * Get the boolean value associated with a key. - * - * @param key A key string. - * @return The truth. - * @throws JSONException - * if the value is not a Boolean or the String "true" or "false". - */ - public boolean getBoolean(String key) throws JSONException { - Object o = get(key); - if (o.equals(Boolean.FALSE) || - (o instanceof String && - ((String)o).equalsIgnoreCase("false"))) { - return false; - } else if (o.equals(Boolean.TRUE) || - (o instanceof String && - ((String)o).equalsIgnoreCase("true"))) { - return true; - } - throw new JSONException("JSONObject[" + quote(key) + - "] is not a Boolean."); - } - - - /** - * Get the double value associated with a key. - * @param key A key string. - * @return The numeric value. - * @throws JSONException if the key is not found or - * if the value is not a Number object and cannot be converted to a number. - */ - public double getDouble(String key) throws JSONException { - Object o = get(key); - try { - return o instanceof Number ? - ((Number)o).doubleValue() : Double.parseDouble((String)o); - } catch (Exception e) { - throw new JSONException("JSONObject[" + quote(key) + - "] is not a number."); - } - } - - - /** - * Get the int value associated with a key. If the number value is too - * large for an int, it will be clipped. - * - * @param key A key string. - * @return The integer value. - * @throws JSONException if the key is not found or if the value cannot - * be converted to an integer. - */ - public int getInt(String key) throws JSONException { - Object o = get(key); - return o instanceof Number ? - ((Number)o).intValue() : (int)getDouble(key); - } - - - /** - * Get the JSONArray value associated with a key. - * - * @param key A key string. - * @return A JSONArray which is the value. - * @throws JSONException if the key is not found or - * if the value is not a JSONArray. - */ - public JSONArray getJSONArray(String key) throws JSONException { - Object o = get(key); - if (o instanceof JSONArray) { - return (JSONArray)o; - } - throw new JSONException("JSONObject[" + quote(key) + - "] is not a JSONArray."); - } - - - /** - * Get the JSONObject value associated with a key. - * - * @param key A key string. - * @return A JSONObject which is the value. - * @throws JSONException if the key is not found or - * if the value is not a JSONObject. - */ - public JSONObject getJSONObject(String key) throws JSONException { - Object o = get(key); - if (o instanceof JSONObject) { - return (JSONObject)o; - } - throw new JSONException("JSONObject[" + quote(key) + - "] is not a JSONObject."); - } - - - /** - * Get the long value associated with a key. If the number value is too - * long for a long, it will be clipped. - * - * @param key A key string. - * @return The long value. - * @throws JSONException if the key is not found or if the value cannot - * be converted to a long. - */ - public long getLong(String key) throws JSONException { - Object o = get(key); - return o instanceof Number ? - ((Number)o).longValue() : (long)getDouble(key); - } - - - /** - * Get the string associated with a key. - * - * @param key A key string. - * @return A string which is the value. - * @throws JSONException if the key is not found. - */ - public String getString(String key) throws JSONException { - return get(key).toString(); - } - - - /** - * Determine if the JSONObject contains a specific key. - * @param key A key string. - * @return true if the key exists in the JSONObject. - */ - public boolean has(String key) { - return this.myHashMap.containsKey(key); - } - - - /** - * Determine if the value associated with the key is null or if there is - * no value. - * @param key A key string. - * @return true if there is no value associated with the key or if - * the value is the JSONObject.NULL object. - */ - public boolean isNull(String key) { - return JSONObject.NULL.equals(opt(key)); - } - - - /** - * Get an enumeration of the keys of the JSONObject. - * - * @return An iterator of the keys. - */ - public Iterator keys() { - return this.myHashMap.keySet().iterator(); - } - - - /** - * Get the number of keys stored in the JSONObject. - * - * @return The number of keys in the JSONObject. - */ - public int length() { - return this.myHashMap.size(); - } - - - /** - * Produce a JSONArray containing the names of the elements of this - * JSONObject. - * @return A JSONArray containing the key strings, or null if the JSONObject - * is empty. - */ - public JSONArray names() { - JSONArray ja = new JSONArray(); - Iterator keys = keys(); - while (keys.hasNext()) { - ja.put(keys.next()); - } - return ja.length() == 0 ? null : ja; - } - - /** - * Produce a string from a number. - * @param n A Number - * @return A String. - * @throws JSONException If n is a non-finite number. - */ - static public String numberToString(Number n) - throws JSONException { - if (n == null) { - throw new JSONException("Null pointer"); - } - testValidity(n); - -// Shave off trailing zeros and decimal point, if possible. - - String s = n.toString(); - if (s.indexOf('.') > 0 && s.indexOf('e') < 0 && s.indexOf('E') < 0) { - while (s.endsWith("0")) { - s = s.substring(0, s.length() - 1); - } - if (s.endsWith(".")) { - s = s.substring(0, s.length() - 1); - } - } - return s; - } - - - /** - * Get an optional value associated with a key. - * @param key A key string. - * @return An object which is the value, or null if there is no value. - */ - public Object opt(String key) { - return key == null ? null : this.myHashMap.get(key); - } - - - /** - * Get an optional boolean associated with a key. - * It returns false if there is no such key, or if the value is not - * Boolean.TRUE or the String "true". - * - * @param key A key string. - * @return The truth. - */ - public boolean optBoolean(String key) { - return optBoolean(key, false); - } - - - /** - * Get an optional boolean associated with a key. - * It returns the defaultValue if there is no such key, or if it is not - * a Boolean or the String "true" or "false" (case insensitive). - * - * @param key A key string. - * @param defaultValue The default. - * @return The truth. - */ - public boolean optBoolean(String key, boolean defaultValue) { - try { - return getBoolean(key); - } catch (Exception e) { - return defaultValue; - } - } - - - /** - * Get an optional double associated with a key, - * or NaN if there is no such key or if its value is not a number. - * If the value is a string, an attempt will be made to evaluate it as - * a number. - * - * @param key A string which is the key. - * @return An object which is the value. - */ - public double optDouble(String key) { - return optDouble(key, Double.NaN); - } - - - /** - * Get an optional double associated with a key, or the - * defaultValue if there is no such key or if its value is not a number. - * If the value is a string, an attempt will be made to evaluate it as - * a number. - * - * @param key A key string. - * @param defaultValue The default. - * @return An object which is the value. - */ - public double optDouble(String key, double defaultValue) { - try { - Object o = opt(key); - return o instanceof Number ? ((Number)o).doubleValue() : - new Double((String)o).doubleValue(); - } catch (Exception e) { - return defaultValue; - } - } - - - /** - * Get an optional int value associated with a key, - * or zero if there is no such key or if the value is not a number. - * If the value is a string, an attempt will be made to evaluate it as - * a number. - * - * @param key A key string. - * @return An object which is the value. - */ - public int optInt(String key) { - return optInt(key, 0); - } - - - /** - * Get an optional int value associated with a key, - * or the default if there is no such key or if the value is not a number. - * If the value is a string, an attempt will be made to evaluate it as - * a number. - * - * @param key A key string. - * @param defaultValue The default. - * @return An object which is the value. - */ - public int optInt(String key, int defaultValue) { - try { - return getInt(key); - } catch (Exception e) { - return defaultValue; - } - } - - - /** - * Get an optional JSONArray associated with a key. - * It returns null if there is no such key, or if its value is not a - * JSONArray. - * - * @param key A key string. - * @return A JSONArray which is the value. - */ - public JSONArray optJSONArray(String key) { - Object o = opt(key); - return o instanceof JSONArray ? (JSONArray)o : null; - } - - - /** - * Get an optional JSONObject associated with a key. - * It returns null if there is no such key, or if its value is not a - * JSONObject. - * - * @param key A key string. - * @return A JSONObject which is the value. - */ - public JSONObject optJSONObject(String key) { - Object o = opt(key); - return o instanceof JSONObject ? (JSONObject)o : null; - } - - - /** - * Get an optional long value associated with a key, - * or zero if there is no such key or if the value is not a number. - * If the value is a string, an attempt will be made to evaluate it as - * a number. - * - * @param key A key string. - * @return An object which is the value. - */ - public long optLong(String key) { - return optLong(key, 0); - } - - - /** - * Get an optional long value associated with a key, - * or the default if there is no such key or if the value is not a number. - * If the value is a string, an attempt will be made to evaluate it as - * a number. - * - * @param key A key string. - * @param defaultValue The default. - * @return An object which is the value. - */ - public long optLong(String key, long defaultValue) { - try { - return getLong(key); - } catch (Exception e) { - return defaultValue; - } - } - - - /** - * Get an optional string associated with a key. - * It returns an empty string if there is no such key. If the value is not - * a string and is not null, then it is coverted to a string. - * - * @param key A key string. - * @return A string which is the value. - */ - public String optString(String key) { - return optString(key, ""); - } - - - /** - * Get an optional string associated with a key. - * It returns the defaultValue if there is no such key. - * - * @param key A key string. - * @param defaultValue The default. - * @return A string which is the value. - */ - public String optString(String key, String defaultValue) { - Object o = opt(key); - return o != null ? o.toString() : defaultValue; - } - - - /** - * Put a key/boolean pair in the JSONObject. - * - * @param key A key string. - * @param value A boolean which is the value. - * @return this. - * @throws JSONException If the key is null. - */ - public JSONObject put(String key, boolean value) throws JSONException { - put(key, Boolean.valueOf(value)); - return this; - } - - - /** - * Put a key/double pair in the JSONObject. - * - * @param key A key string. - * @param value A double which is the value. - * @return this. - * @throws JSONException If the key is null or if the number is invalid. - */ - public JSONObject put(String key, double value) throws JSONException { - put(key, new Double(value)); - return this; - } - - - /** - * Put a key/int pair in the JSONObject. - * - * @param key A key string. - * @param value An int which is the value. - * @return this. - * @throws JSONException If the key is null. - */ - public JSONObject put(String key, int value) throws JSONException { - put(key, new Integer(value)); - return this; - } - - - /** - * Put a key/long pair in the JSONObject. - * - * @param key A key string. - * @param value A long which is the value. - * @return this. - * @throws JSONException If the key is null. - */ - public JSONObject put(String key, long value) throws JSONException { - put(key, new Long(value)); - return this; - } - - - /** - * Put a key/value pair in the JSONObject. If the value is null, - * then the key will be removed from the JSONObject if it is present. - * @param key A key string. - * @param value An object which is the value. It should be of one of these - * types: Boolean, Double, Integer, JSONArray, JSONObject, Long, String, - * or the JSONObject.NULL object. - * @return this. - * @throws JSONException If the value is non-finite number - * or if the key is null. - */ - public JSONObject put(String key, Object value) - throws JSONException { - if (key == null) { - throw new JSONException("Null key."); - } - if (value != null) { - testValidity(value); - this.myHashMap.put(key, value); - } else { - remove(key); - } - return this; - } - - - /** - * Put a key/value pair in the JSONObject, but only if the - * key and the value are both non-null. - * @param key A key string. - * @param value An object which is the value. It should be of one of these - * types: Boolean, Double, Integer, JSONArray, JSONObject, Long, String, - * or the JSONObject.NULL object. - * @return this. - * @throws JSONException If the value is a non-finite number. - */ - public JSONObject putOpt(String key, Object value) throws JSONException { - if (key != null && value != null) { - put(key, value); - } - return this; - } - - - /** - * Produce a string in double quotes with backslash sequences in all the - * right places. A backslash will be inserted within </, allowing JSON - * text to be delivered in HTML. In JSON text, a string cannot contain a - * control character or an unescaped quote or backslash. - * @param string A String - * @return A String correctly formatted for insertion in a JSON text. - */ - public static String quote(String string) { - if (string == null || string.length() == 0) { - return "\"\""; - } - - char b; - char c = 0; - int i; - int len = string.length(); - StringBuilder sb = new StringBuilder(len + 4); - String t; - - sb.append('"'); - for (i = 0; i < len; i += 1) { - b = c; - c = string.charAt(i); - switch (c) { - case '\\': - case '"': - sb.append('\\'); - sb.append(c); - break; - case '/': - if (b == '<') { - sb.append('\\'); - } - sb.append(c); - break; - case '\b': - sb.append("\\b"); - break; - case '\t': - sb.append("\\t"); - break; - case '\n': - sb.append("\\n"); - break; - case '\f': - sb.append("\\f"); - break; - case '\r': - sb.append("\\r"); - break; - default: - if (c < ' ') { - t = "000" + Integer.toHexString(c); - sb.append("\\u" + t.substring(t.length() - 4)); - } else { - sb.append(c); - } - } - } - sb.append('"'); - return sb.toString(); - } - - /** - * Remove a name and its value, if present. - * @param key The name to be removed. - * @return The value that was associated with the name, - * or null if there was no value. - */ - public Object remove(String key) { - return this.myHashMap.remove(key); - } - - /** - * Throw an exception if the object is an NaN or infinite number. - * @param o The object to test. - * @throws JSONException If o is a non-finite number. - */ - static void testValidity(Object o) throws JSONException { - if (o != null) { - if (o instanceof Double) { - if (((Double)o).isInfinite() || ((Double)o).isNaN()) { - throw new JSONException( - "JSON does not allow non-finite numbers"); - } - } else if (o instanceof Float) { - if (((Float)o).isInfinite() || ((Float)o).isNaN()) { - throw new JSONException( - "JSON does not allow non-finite numbers."); - } - } - } - } - - - /** - * Produce a JSONArray containing the values of the members of this - * JSONObject. - * @param names A JSONArray containing a list of key strings. This - * determines the sequence of the values in the result. - * @return A JSONArray of values. - * @throws JSONException If any of the values are non-finite numbers. - */ - public JSONArray toJSONArray(JSONArray names) throws JSONException { - if (names == null || names.length() == 0) { - return null; - } - JSONArray ja = new JSONArray(); - for (int i = 0; i < names.length(); i += 1) { - ja.put(this.opt(names.getString(i))); - } - return ja; - } - - /** - * Make an JSON text of this JSONObject. For compactness, no whitespace - * is added. If this would not result in a syntactically correct JSON text, - * then null will be returned instead. - * <p> - * Warning: This method assumes that the data structure is acyclical. - * - * @return a printable, displayable, portable, transmittable - * representation of the object, beginning - * with <code>{</code> <small>(left brace)</small> and ending - * with <code>}</code> <small>(right brace)</small>. - */ - public String toString() { - try { - Iterator keys = keys(); - StringBuilder sb = new StringBuilder("{"); - - while (keys.hasNext()) { - if (sb.length() > 1) { - sb.append(','); - } - Object o = keys.next(); - sb.append(quote(o.toString())); - sb.append(':'); - sb.append(valueToString(this.myHashMap.get(o))); - } - sb.append('}'); - return sb.toString(); - } catch (Exception e) { - return null; - } - } - - - /** - * Make a prettyprinted JSON text of this JSONObject. - * <p> - * Warning: This method assumes that the data structure is acyclical. - * @param indentFactor The number of spaces to add to each level of - * indentation. - * @return a printable, displayable, portable, transmittable - * representation of the object, beginning - * with <code>{</code> <small>(left brace)</small> and ending - * with <code>}</code> <small>(right brace)</small>. - * @throws JSONException If the object contains an invalid number. - */ - public String toString(int indentFactor) throws JSONException { - return toString(indentFactor, 0); - } - - - /** - * Make a prettyprinted JSON text of this JSONObject. - * <p> - * Warning: This method assumes that the data structure is acyclical. - * @param indentFactor The number of spaces to add to each level of - * indentation. - * @param indent The indentation of the top level. - * @return a printable, displayable, transmittable - * representation of the object, beginning - * with <code>{</code> <small>(left brace)</small> and ending - * with <code>}</code> <small>(right brace)</small>. - * @throws JSONException If the object contains an invalid number. - */ - String toString(int indentFactor, int indent) throws JSONException { - int i; - int n = length(); - if (n == 0) { - return "{}"; - } - Iterator keys = keys(); - StringBuilder sb = new StringBuilder("{"); - int newindent = indent + indentFactor; - Object o; - if (n == 1) { - o = keys.next(); - sb.append(quote(o.toString())); - sb.append(": "); - sb.append(valueToString(this.myHashMap.get(o), indentFactor, - indent)); - } else { - while (keys.hasNext()) { - o = keys.next(); - if (sb.length() > 1) { - sb.append(",\n"); - } else { - sb.append('\n'); - } - for (i = 0; i < newindent; i += 1) { - sb.append(' '); - } - sb.append(quote(o.toString())); - sb.append(": "); - sb.append(valueToString(this.myHashMap.get(o), indentFactor, - newindent)); - } - if (sb.length() > 1) { - sb.append('\n'); - for (i = 0; i < indent; i += 1) { - sb.append(' '); - } - } - } - sb.append('}'); - return sb.toString(); - } - - - /** - * Make a JSON text of an object value. - * <p> - * Warning: This method assumes that the data structure is acyclical. - * @param value The value to be serialized. - * @return a printable, displayable, transmittable - * representation of the object, beginning - * with <code>{</code> <small>(left brace)</small> and ending - * with <code>}</code> <small>(right brace)</small>. - * @throws JSONException If the value is or contains an invalid number. - */ - static String valueToString(Object value) throws JSONException { - if (value == null || value.equals(null)) { - return "null"; - } - if (value instanceof Number) { - return numberToString((Number) value); - } - if (value instanceof Boolean || value instanceof JSONObject || - value instanceof JSONArray) { - return value.toString(); - } - return quote(value.toString()); - } - - - /** - * Make a prettyprinted JSON text of an object value. - * <p> - * Warning: This method assumes that the data structure is acyclical. - * @param value The value to be serialized. - * @param indentFactor The number of spaces to add to each level of - * indentation. - * @param indent The indentation of the top level. - * @return a printable, displayable, transmittable - * representation of the object, beginning - * with <code>{</code> <small>(left brace)</small> and ending - * with <code>}</code> <small>(right brace)</small>. - * @throws JSONException If the object contains an invalid number. - */ - static String valueToString(Object value, int indentFactor, int indent) - throws JSONException { - if (value == null || value.equals(null)) { - return "null"; - } - if (value instanceof Number) { - return numberToString((Number) value); - } - if (value instanceof Boolean) { - return value.toString(); - } - if (value instanceof JSONObject) { - return ((JSONObject)value).toString(indentFactor, indent); - } - if (value instanceof JSONArray) { - return ((JSONArray)value).toString(indentFactor, indent); - } - return quote(value.toString()); - } -} |